DMR Teir 3 help

[nick perry]

It looks to be traffic on the system but i get no audio. In the SDR details it says " Channel grant- No freq- check playlist config lsn channel map?" 

Any help would be appreciated

 

[nick perry]

This is the table on RR. I just imported the system to sdr trunk tho 

[nick perry]

Do these LCN numbers in the sdr channel mean anything. Do they have to be in the freq table?

[sdrtrunk]

Yes, you need entries in the LCN/LSN channel map so that sdrtrunk knows which frequency to tune to.  Some systems don't broadcast the frequency band details, so sdrtrunk can't figure out the channe frequencies.

Only one of your event screen shots has the channel details column expanded and showing.  From that, you need to add entries for (at least):

LCN/LSN

183/367

183/368

396/793

396/794

And for any other LCN/LSN that shows up in the events table in the channel column where it doesn't have a frequency.

You might be able to recover those mappings.  From the LCN mappings that you have (711/713), it looks like the channels are spaced 12.5 kHz apart (859.8825 - 859.8625 = .025 / 2 = .0125).  

If the channel spacing is consistent, then

LCN 396

711 - 396 = 315 * 12.5 = 3.9375 MHz

859.8625 - 3.9375 = 855.925 MHz

LCN 183

711 - 183 = 528 * 12.5 = 6.600 MHz

859.8625 - 6.6 = 853.2625

But, there could be breaks in the channel lineup and there's no guarantee that the LCN frequency blocks are in numerical order.

If those are not the correct frequencies, then you'll need to monitor the events table to see when a group call is happening and then observe on the spectral display when a new channel activates and visually identify the frequency and then plugin that frequency for the LCN/LSN that is listed for the event.  This might take several tries to get it right.

Denny

[nick perry]

Any idea why it is not showing the freq in the event window or decoding? signal is strong. Everything was decoding fine on dsdplus so not sure what the issue is in ssdr trunk